Which resource was not vital to the economic success of the United States?

Lead

Explanation:

The economic success of United states was in no way imparted by the mineral lead.

In fact, the mineral is considered a toxic pollutant and has been banned. The United States like most countries are not interested in lead as a viable economic option.

It was once used in paints because they produce a highly durable mix.

Also, it was an additive in gasoline. This has been banned.

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.